Details

Autor(en) / Beteiligte

• Yu, Xiaochen
• Li, Huajian
• Li, Xiaojie
• Jiang, Yinlin
• Zheng, Rongfang
• Wu, Han
• Song, Zeyu
• Jiang, Ziqiang
• Zhao, Peng

Titel

Up-conversion luminescence and near-infrared quantum cutting of Ho3+/Yb3+ co-doped hexagonal NaGdF4 phosphors

Ist Teil von

• Journal of materials science. Materials in electronics, 2021-08, Vol.32 (16), p.21032-21043

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In this paper, Ho 3+ /Yb 3+ co-doped Sodium Gadolinium Fluoride (NaGdF 4 ) phosphors were synthesized by a facile and efficient hydrothermal method. The samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy spectrum (EDS), and photoluminescence (PL). The results of XRD and SEM indicated that the prepared NaGdF 4 samples have the hexagonal structure and good orientation in the case of changing the concentration of Yb 3+ . The results of pump power dependence of up-conversion intensity indicated that the energy transfer mechanism from Yb 3+ to Ho 3+ is a two-photon process. The energy transfer between Ho 3+ and Yb 3+ under 448 nm excitation was determined by PL spectra and fluorescence lifetimes. All the results proved that the doping of Yb 3+ ions can effectively improve the up-conversion luminescence of NaGdF 4 phosphors and achieve quantum cutting efficiency of up to 179.8%. Overall, NaGdF 4 :Ho 3+ /Yb 3+ have potential application in the field of optoelectronic materials.